| Message ID | YLjNfHuTQ817oUtX@mwanda (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | [net-next] net/mlx5: check for allocation failure in mlx5_ft_pool_init() | expand |
On Thu, Jun 03, 2021 at 03:39:24PM +0300, Dan Carpenter wrote: > Add a check for if the kzalloc() fails. > > Fixes: 4a98544d1827 ("net/mlx5: Move chains ft pool to be used by all firmware steering") > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> > --- > drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c > index 526fbb669142..c14590acc772 100644 > --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c > +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c > @@ -27,6 +27,8 @@ int mlx5_ft_pool_init(struct mlx5_core_dev *dev) > int i; > > ft_pool = kzalloc(sizeof(*ft_pool), GFP_KERNEL); > + if (!ft_pool) > + return -ENOMEM; > > for (i = ARRAY_SIZE(FT_POOLS) - 1; i >= 0; i--) > ft_pool->ft_left[i] = FT_SIZE / FT_POOLS[i]; Dan thanks for your patch. When reviewed your patch, I spotted another error in the patch from the Fixes line. 2955 err = mlx5_ft_pool_init(dev); 2956 if (err) 2957 return err; 2958 2959 steering = kzalloc(sizeof(*steering), GFP_KERNEL); 2960 if (!steering) 2961 goto err; ^^^^^^^^ it will return success, while should return ENOMEM. Thanks, Acked-by: Leon Romanovsky <leonro@nvidia.com>
On Thu, Jun 03, 2021 at 04:12:38PM +0300, Leon Romanovsky wrote: > On Thu, Jun 03, 2021 at 03:39:24PM +0300, Dan Carpenter wrote: > > Add a check for if the kzalloc() fails. > > > > Fixes: 4a98544d1827 ("net/mlx5: Move chains ft pool to be used by all firmware steering") > > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> > > --- > > drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c | 2 ++ > > 1 file changed, 2 insertions(+) > > > > diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c > > index 526fbb669142..c14590acc772 100644 > > --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c > > +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c > > @@ -27,6 +27,8 @@ int mlx5_ft_pool_init(struct mlx5_core_dev *dev) > > int i; > > > > ft_pool = kzalloc(sizeof(*ft_pool), GFP_KERNEL); > > + if (!ft_pool) > > + return -ENOMEM; > > > > for (i = ARRAY_SIZE(FT_POOLS) - 1; i >= 0; i--) > > ft_pool->ft_left[i] = FT_SIZE / FT_POOLS[i]; > > > Dan thanks for your patch. > > When reviewed your patch, I spotted another error in the patch from the Fixes line. > > 2955 err = mlx5_ft_pool_init(dev); > 2956 if (err) > 2957 return err; > 2958 > 2959 steering = kzalloc(sizeof(*steering), GFP_KERNEL); > 2960 if (!steering) > 2961 goto err; > ^^^^^^^^ it will return success, while should return ENOMEM. Smatch prints a static checker warning for this, but I never finished going through the backlog of old "missing error code" warnings. At one point I was down to 38 warnings left but now I see that the backlog is 62 warnings so people are adding new bugs faster than I'm reviewing them... :P I will take care of this tomorrow as a separate patch. I will just report or the other 61 warnings and get the backlog cleared out so that I can start checking these better in the future. regards, dan carpenter
On Thu, 2021-06-03 at 15:39 +0300, Dan Carpenter wrote: > Add a check for if the kzalloc() fails. > > Fixes: 4a98544d1827 ("net/mlx5: Move chains ft pool to be used by all > firmware steering") > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> > --- > drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c > b/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c > index 526fbb669142..c14590acc772 100644 > --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c > +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c > @@ -27,6 +27,8 @@ int mlx5_ft_pool_init(struct mlx5_core_dev *dev) > int i; > > ft_pool = kzalloc(sizeof(*ft_pool), GFP_KERNEL); > + if (!ft_pool) > + return -ENOMEM; > > for (i = ARRAY_SIZE(FT_POOLS) - 1; i >= 0; i--) > ft_pool->ft_left[i] = FT_SIZE / FT_POOLS[i]; applied to net-next-mlx5, thanks
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c index 526fbb669142..c14590acc772 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c @@ -27,6 +27,8 @@ int mlx5_ft_pool_init(struct mlx5_core_dev *dev) int i; ft_pool = kzalloc(sizeof(*ft_pool), GFP_KERNEL); + if (!ft_pool) + return -ENOMEM; for (i = ARRAY_SIZE(FT_POOLS) - 1; i >= 0; i--) ft_pool->ft_left[i] = FT_SIZE / FT_POOLS[i];
Add a check for if the kzalloc() fails. Fixes: 4a98544d1827 ("net/mlx5: Move chains ft pool to be used by all firmware steering") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> --- drivers/net/ethernet/mellanox/mlx5/core/fs_ft_pool.c | 2 ++ 1 file changed, 2 insertions(+)